Stay Informed

Check the following sources often to keep up on new features and other changes.


The project page on GitHub remains the best way to track the development of Bit.


Feel free to follow @Ofekmeister on Twitter for occasional updates.

Release History

Unreleased (see master)

0.5.2 (2019-05-16)

  • Fixed a subtle bug when signing a multisig transaction over multiple inputs

0.5.1 (2019-04-19)

  • New: Add get_transaction_by_id() calls

  • Update default fees

  • Multisig improvements

0.5.0 (2019-03-10)

  • New MultiSig adds support for P2SH nested m-of-n multisignature contracts

  • Support for sending to P2SH and Bech32 output addresses

  • P2SH nested segwit addresses for PrivateKey and MultiSig

  • Support for batching transaction inputs from different keys

  • Update transaction message length limit to 80

0.4.3 (2018-03-11)

  • Fixed fee calculation when ``combine=False`

  • Breaking: Exceptions will now be raised when using pay2sh addresses (until implemented)

0.4.2 (2017-12-09)

  • Optimized network API priorities

  • Fixed Smartbit pushtx usage

  • Updated to

0.4.1 (2017-11-01)

  • Removed network backend as Coinbase has shut it down.

0.4.0 (2017-04-19)

  • Changed elliptic curve backend from OpenSSL to libsecp256k1. This results in an order of magnitude faster key creation and signing/verifying.

  • Improved performance of base58 encoding/decoding.

  • Breaking: Dropped support for Python 3.3 & 3.4.

  • Breaking: verify_sig() now returns False for invalid signatures instead of raising an exception. Also, strict is no longer a parameter as BIP-62 compliance is now required.

0.3.1 (2017-03-21)

  • Fixed cold storage workflow.

  • Improved performance of private key instantiation.

0.3.0 (2017-03-20)

  • Implemented a way to use private keys in cold storage.

  • Changed the default timeout of services from 5 to 10 seconds.

  • Fixed network service redundancy by failing if response code is not 200.

0.2.0 (2017-03-17)

  • Improved stability of network tests.

  • Added verify_sig().

  • Refactored crypto to yield over an order of magnitude faster hashing.

0.1.0 (2017-03-15)

  • Initial release.